Fig. 1From: Incidence of postoperative opioid-induced respiratory depression episodes in patients on room air or supplemental oxygen: a post-hoc analysis of the PRODIGY trialFlow chart of PRODIGY patients from 2 trial sites receiving supplemental oxygen during continuous monitoring. Abbreviations: PRODIGY = PRediction of Opioid-induced respiratory Depression In patients monitored by capnoGraphY; SO = Supplemental oxygenBack to article page